.baseUI-tooltip {
    background: rgba(0, 0, 0, .85);
    font-size: 14px;
    padding: 4px 8px;
    box-sizing: border-box;
    border-radius: 4px;
    box-shadow: 0 6px 16px 0 rgba(0, 0, 0, .08), 0 3px 6px -4px rgba(0, 0, 0, .12), 0 9px 28px 8px rgba(0, 0, 0, .05);
    color: #fff;
}